[document]Modify the inconsistencies of grammar and wording in README_zh_CN.md (#14471)
* Modify the inconsistencies of grammar and wording in README.md
* Update README_zh_CN.md
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Co-authored-by: David Zollo <davidzollo365@gmail.com>
社区欢迎大家贡献,请参考此页面了解更多:[如何贡献](docs/docs/zh/contribute/join/contribute.md),在[这里](https://github.com/apache/dolphinscheduler/contribute)可以找到good first issue
社区欢迎大家贡献,请参考此页面了解更多:[如何贡献](docs/docs/zh/contribute/join/contribute.md),如果你是首次贡献 DolphinScheduler,在[这里](https://github.com/apache/dolphinscheduler/contribute)可以找到good first issue